I'so-bāre, n.
n. [Gr. ἴσος, equal, and βάρος, weight.] (Phys. Geog.) A line connecting those places upon the surface of the globe where the mean height of the barometer at the level of the sea is the same.
n. [Gr. ἴσος, equal, and βάρος, weight.] (Phys. Geog.) A line connecting those places upon the surface of the globe where the mean height of the barometer at the level of the sea is the same.